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RE: Way OT : Any maths bods around?


  • Subject: RE: Way OT : Any maths bods around?
  • From: "Hawes,Timothy Edward \(GEG\)" <haweste@xxxxxxxxxxxxxxx>
  • Date: Mon, 28 Feb 2005 13:56:47 -0000


1 in 10,000  ?  (100,000 MTBF / 10 hrs)

It's probably more complicated than that, e.g. what happens if it's
already flown for 99,989 hrs and you're flight is the last 10 before
it's service ? I guess they're serviced at 50% of their quoted MTBF
though and a 747 can still fly with one engine lost ?

Not planning a trip are you ?
;-)

Cheers,

Tim H.

> -----Original Message-----
> From: Ben McCormack
>
> OK this is way OT but I have got a query concerning maths and stats.
>
> Right here goes
>
> An engine on a 747 has a Mean Time Between Failure of 100,000 Hours.
>
> So is there a simple calculation for the probability that an
> engine will fail in a 10 Hour flight?




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